unofficial verbal value. alls I did was go to find out what size the diamond was, he said its as close to 1 kt as you cant get. he also said that its worth 4,500.00 if not more. so am waiting to get in touch with the other gentleman, who does the in depth written appraisal.. but I was told its a awesome stone, and most likely worth more. needless to say I am floored as it is. if it comes in higher, I will hit the floor.